 | SN74HC4020N | 1251 | Texas Instruments | 19+ | 16-DIP（0.300"，7.62mm） | ￥0.7100 | IC ASYNC BINARY COUNTER 16-DIP | 购买 |
| SN74HC590ADW | 882 | Texas Instruments | 19+ | 16-SOIC（0.295"，7.50mm 宽） | ￥0.7200 | IC 8-BIT BINARY COUNTER 16-SOIC | 购买 |
| SN74F163AD | 1346 | Texas Instruments | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥0.7400 | IC COUNTER 4BIT BIN SYNC 16-SOIC | 购买 |
| CD74HCT4024E | 1313 | Texas Instruments | 19+ | 14-DIP（0.300"，7.62mm） | ￥0.7500 | IC 7-STAGE RIPPLE COUNT 14-DIP | 购买 |
| CD74HCT390M | 1867 | Texas Instruments | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥0.7700 | IC DUAL DECADE RIP CONTR 16-SOIC | 购买 |
| CD74AC163M | 1317 | Texas Instruments | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥0.7700 | IC 4BIT SYNC BIN COUNTER 16-SOIC | 购买 |
| CD74HC390M | 188 | Texas Instruments | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥0.7900 | IC DUAL DECADE RIP CNTR 16SOIC | 购买 |
| CD74HC191M | 775 | Texas Instruments | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥0.9600 | IC BCD UP/DWN COUNT PREST 16SOIC | 购买 |
| CD74HC40103M | 5411 | Texas Instruments | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥1.2600 | IC 8-STAGE DOWN COUNTER 16-SOIC | 购买 |
| SN74LS93N | 2301 | Texas Instruments | 19+ | 14-DIP（0.300"，7.62mm） | ￥2.4800 | IC 4-BIT BINARY COUNTER 14-DIP | 购买 |
| SN74LS293D | 225 | Texas Instruments | 19+ | 14-SOIC（0.154"，3.90mm 宽） | ￥3.0800 | IC 4BIT BINARY COUNTER 14-SOIC | 购买 |
| SN74ALS193AD | 128 | Texas Instruments | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥3.2200 | IC UP/DN BINARY CNTR/CLK 16-SOIC | 购买 |
| SN74ALS569AN | 136 | Texas Instruments | 19+ | 20-DIP（0.300"，7.62mm） | ￥5.4600 | IC COUNTER SYNCH 4BIT U/D 20-DIP | 购买 |
| SN74F169D | 49 | Texas Instruments | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥7.2300 | IC COUNTER 4BIT BIN SYNC 16-SOIC | 购买 |
| SN74LS592N | 970 | Texas Instruments | 19+ | 16-DIP（0.300"，7.62mm） | ￥12.0000 | IC BIN CNTR W/INPUT-REG 16-DIP | 购买 |
| 74HC4040D,653 | 2500 | NXP Semiconductors | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥0.1449 | IC 12STAGE BINARY RIPPLE 16SOIC | 购买 |
| 74HC4040D,653 | 2500 | NXP Semiconductors | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥0.1449 | IC 12STAGE BINARY RIPPLE 16SOIC | 购买 |
| 74HC4040D,653 | 2500 | NXP Semiconductors | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥0.1449 | IC 12STAGE BINARY RIPPLE 16SOIC | 购买 |
| 74HC191N,652 | 1792 | NXP Semiconductors | 19+ | 16-DIP（0.300"，7.62mm） | ￥1.5500 | IC COUNTER UP/DOWN SYNC 16DIP | 购买 |
| 74HC193N,652 | 3434 | NXP Semiconductors | 19+ | 16-DIP（0.300"，7.62mm） | ￥1.5500 | IC 4BIT BINARY UP/DN COUNT 16DIP | 购买 |
